This is the UML sequence diagram of Human Resource Management System which shows the interaction between the objects of Employee, Appraisals, Salary, Employee Types, Departments. The instance of class objects involved in this UML Sequence Diagram of Human Resource Management System are as follows:

• Employee Object
• Appraisals Object
• Salary Object
• Employee Types Object
• Departments Object

This is the UML sequence diagram of Hostel Management System which shows the interaction between the objects of Rooms, Allotees, Hostel, Rent, Payments. The instance of class objects involved in this UML Sequence Diagram of Hostel Management System are as follows:

• Rooms Object
• Allotees Object
• Hostel Object
• Rent Object
• Payments Object

This is the UML sequence diagram of Hotel Booking System which shows the interaction between the objects of Hotel, Services, Booking, Rooms, Customers. The instance of class objects involved in this UML Sequence Diagram of Hotel Booking System are as follows:

• Hotel Object
• Services Object
• Booking Object
• Rooms Object
• Customers Object

This is the UML sequence diagram of Hotel Management System which shows the interaction between the objects of Payments, Rooms, Booking, Services, Hotel. The instance of class objects involved in this UML Sequence Diagram of Hotel Management System are as follows:

• Payments Object
• Rooms Object
• Booking Object
• Services Object
• Hotel Object

This is the UML sequence diagram of Hotel Room Management System which shows the interaction between the objects of Payment, Hotel Employee, Hotel, Customer, Facility. The instance of class objects involved in this UML Sequence Diagram of Hotel Room Management System are as follows:

• Payment Object
• Hotel Employee Object
• Hotel Object
• Customer Object
• Facility Object

This is the UML sequence diagram of HRD Management System which shows the interaction between the objects of Departments, Employee, Appraisals, Trainings, Salary. The instance of class objects involved in this UML Sequence Diagram of HRD Management System are as follows:

• Departments Object
• Employee Object
• Appraisals Object
• Trainings Object
• Salary Object

This is the UML sequence diagram of Instant Messaging System which shows the interaction between the objects of Server, Status, Conference, Popup, Client. The instance of class objects involved in this UML Sequence Diagram of Instant Messaging System are as follows:

• Server Object
• Status Object
• Conference Object
• Popup Object
• Client Object

This is the UML sequence diagram of Insurace Policy Enquiry System which shows the interaction between the objects of Buyers, Policy, Plans, Taxes, Insurance. The instance of class objects involved in this UML Sequence Diagram of Insurace Policy Enquiry System are as follows:

• Buyers Object
• Policy Object
• Plans Object
• Taxes Object
• Insurance Object

This is the UML sequence diagram of Institution Management System which shows the interaction between the objects of Student, Registartion, Fees, Faculty, Course. The instance of class objects involved in this UML Sequence Diagram of Institution Management System are as follows:

• Student Object
• Registartion Object
• Fees Object
• Faculty Object
• Course Object

This is the UML sequence diagram of Insurance Information System which shows the interaction between the objects of Plans, Insurance, Taxes, Payments, Buyers. The instance of class objects involved in this UML Sequence Diagram of Insurance Information System are as follows:

• Plans Object
• Insurance Object
• Taxes Object
• Payments Object
• Buyers Object